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The two most pressing needs for Miami are wide receiver and cornerback. Ryan Tannehill was given very few weapons to be successful in his rookie season, but that will most likely change going into next season.
Miami was also able to trade its best cornerback, Vontae Davis, when Richard Marshall outplayed him in training camp. However, Marshall suffered a season-ending injury early in the season causing Miami have one of the worst passing defenses in the league.
Brian Hartline was being asked to go against the opposition's top cornerback ever game and was able to be contained more often than not. Hartline is a terrific option for Tannehill to have, but not as the top option. If he's paired with a true No. 1 receiver, he will be able to take advantage of matchups and become a bigger threat.
Along with Hartline, Davone Bess was the other Miami receiver that had any type of impact. He is a very good slot receiver with sure hands. With Miami's weak talent at wide receiver, Bess was taken out of his comfort zone and asked to run seam routes along the sidelines against faster and taller cornerbacks. With a better receiver on the roster, Bess will be able to focus on his main duties as a slot receiver running shorter, precise routes.
Sean Smith was given the chance to be Miami's No. 1 cornerback and prove to them that he should be re-signed. It's safe to say that he didn't prove anything to anyone. Smith was a disappointment all season long as he was too inconsistent and allowed too many big plays. With Smith as its best cornerback, it's evident Miami did not have a very good group of cornerbacks.
Aside from wide receiver and cornerback, needs for Miami include pass-rusher and offensive line.
With Jake Long as good as gone and Jonathan Martin likely filling in at left tackle from now on, they will have to find a right tackle to replace Martin. It is possible that Miami prefers to take a tackle in the draft instead of free agency, unless they are willing to go after someone like Sebastian Vollmer.
As for defensive end, Miami has the luxury of having one of the best in Cameron Wake, but he is not able to generate all the pass rush on every down. Miami must get him some help. There are a few solid players that will hit the market that will probable get a long, hard look from Jeff Ireland. Players such as Dwight Freeney, Cliff Avril, Michael Bennett and the recently released John Abraham. However, with the amount of talented defensive ends coming out of college this year, Miami might wait until April to get Wake the help he needs.